WIP: Add keep epoch env var no global rtn&fix issue 74&81
Fixes the following:
- fix issue xx - add option to strip epoch from package name
- fix issue 74 - don't overwrite existing system repos (when installing the Tor Debian repo, for example)
- fix issue 81 - (allow installation of non-PPA repos that don't match DISTRO_BINARY_COMPAT)
NOT READY
- some code clean ups
- dont ask for repo file name
- make sure ppa2pup and ppa2pup_gawk both get the fixes
Edited by sc0ttj